Snapshot Day 10/12/06 Data (Salt Front RM 52.5) RIVER MILE 14 Inwood Hill Park Latitude 4050’N/ Longitude 7355’W New York City Park Rangers Susan Vincent and the Young Women’s Leadership School – 12th grade Location: In the cove of Inwood Hill Park Area: Forested Surrounding Land Use: Forested 80%, Urban residential 10%, Industrial Commercial 5%, Other 5% . Forested and used by people for picnics, park use, walking dogs, kids playing soccer. It’s like a public park. Sampling Site: It is a salt marsh. Under 5 ft. the bottom is muddy, area covered with vegetation, banks altered, large riprap on shoreline, collected wood/debris in area Plants in area: The plants are growing in and on the water. They cover less than half the area. Kate the ranger says the vegetation doesn’t grow here naturally. All the plants at the park sampling area are exotic. Water depth: 5 feet where seining; 3 feet where minnow pots deployed River Bottom – muddy ITEM Time Reading 1 Reading 2 Comments Physical Air Temperature 6:00 AM 20C 65 F East 3:00 PM 27C 71 F Wind Speed Cloud Cover Weather today Weather recently 2 knots Partly cloudy No rain but drizzly and cloudy, cooler Mon & Tues hot and sunny, yesterday (Wed) rain, wind and cold Water Temperature 11:32 AM 11:38 AM 11:59 AM 66.38F 19.1 C 66.38F 19.1 C 68.54F 20.3 C 53.2 inches/ 135.13 cm YSI meter Turbidity (Site tube)_ 12:06 PM Chlorophyll Sediment Core description 11:42 Clay abundant Roots in core Didn’t match Mud common 11:38 AM 9.5 mg/L Temp.20.3 C 94% saturated 1:02 PM 7.8 8.0 Indicator sol. 9.8 ppt 10 ppt 10 ppt CPUE YSI meter Chemical DO (drop count kit) pH Phosphate Nitrate Alkalinity Salinity Filtered120cc Wood common No real layers – just patches of dark 56.4 inches/ 143.26 cm Macro’s rare Surprised to see no odor – not organic decomposition 10 ppm and below 11:32 AM Fish Catch Number Caught Used seine 20 ft. X 1 30 ft. & minnow traps Seined 2 1 Minnow traps & entry to cove Minnow trap by the dock Minnow trap in front of Nature Center Tides 6 inches long 55 inches/ 139.7 cm 11:04 Species Atlantic Silversides Seine & Minnow traps Seine 1 caught 1 fish Comb jellies White perch Seine 2 caught 1 fish, 2 comb jellies 227 mummichogs 365 total mummichogs 138 mummichogs 11:34 AM 11:49 AM 12:04 PM 5 cm 20 cm 35 cm 0 Flood/rising Flood/rising Flood/rising 12:19 PM 30 cm* Flood/rising * Possibly a wave influenced this reading 12:34 PM 33 cm Flood/rising 12:49 PM 39 cm Flood/rising 1:04 PM 43 cm Flood/rising 1:19 PM 48 cm Flood/rising 1:34 PM 53 cm Flood/rising 40 cm/ 60 .666 cm/sec North/flood 0.8 knots Currents secs 120 cm/60 2 cm/sec North/flood 2.4 knots secs 160 cm/60 2.6 cm/sec North/flood 3.2 knots sec 183 cm/60 3.05 cm/sec North/flood 3.66 knots sec 190 cm/60 3.16 cm/sec North/flood 3.8 knots sec Nature Center is located on a peninsula where the Harlem River meets the Hudson River. Currents can move very swiftly in this area. 12:23 PM Circle Line Northbound Loaded with Traffic Boat passengers Lots of ducks and geese around. Other Train Station nearby (Metro North) with train passing every hr. observations Lots of grass and plants still out even with weather starting to change. Little fish seen around rocks hiding or looking for food.